For years, fans of Avatar: The Last Airbender and The Legend of Korra have burned with one question—what happened to Fire Lord Zuko’s mother? Finding a clue at last, Zuko enlists the aid of Team Avatar—and the most unlikely ally of all—to help uncover the biggest secret of his life. * This is the perfect companion to The Legend of Korra! * The official continuation of Airbender from its creators! * Avatar: The Last Airbender—The Promise soared to the top of sales charts!